Though one of the three most common states of matter on Earth, gases, as they are most often invisible, can be tough for young students to conceptualize. This book offers clarity in the form of straightforward diagrams and easy-to-understand text. Readers will comprehend such physical science concepts as evaporation, condensation, compressibility, fluidity, and volume with ease.

Atoms may be microscopic but they make up everything you see and even everything you don't see, like air. With this book, readers will journey into that microscopic realm of physical science to better understand the atom, its various components, and how they interact to form all the matter around us.